Last and first frost dates in Santarém

When is the last frost in Santarém?

The last frost in Santarém usually comes around 15 January: that is the median of 2016–2025, so in about half of those years the last night at or below 0 °C came later. Hardy crops start before it and frost-tender ones only after it: in the table below arugula can go into open ground from 25 December, while corn waits until 29 January.

When to sow and plant

Planting out: a week after the last frost once the soil is warm enough for the crop; frost-hardy crops three weeks before it; an unheated greenhouse three weeks earlier. Seedlings are sown so they are ready on that day. Each window starts on the Greenly calendar date and ends on the last day that still leaves the crop’s days to harvest (from its card) before the average first autumn frost, plus six weeks of picking for crops harvested over weeks (tomatoes, peppers, aubergines, cucumbers, courgettes, pumpkins, watermelons, beans) — our rule; earlier in the window is safer.

When the soil warms up in Santarém

The day the top 7 cm of soil first averages each temperature over a week, median of 2016–2025 (ERA5 via Open-Meteo).

Frost dates near Santarém

Of the nearest cities on our list, the last spring frost ends earliest in Évora (12 January) and latest in Leiria (22 January).

Seeds, seedlings and markets in Santarém

Within 15 km of Santarém OpenStreetMap lists 3 farm-supply shops and 8 markets (collected 27 October 2026). The nearest farm supply to the city centre is Plantiagro, 7 km away.

• Plantiagro — farm supply · sells seed
  Zona Industrial de Almeirim 49, 2080-221 Almeirim · 7 km · plantiagro.pt
• Agriloja — farm supply
  Mon–Sat 08:30–19:30; public holidays 09:00–18:00 · 7 km · agriloja.pt
• Agriloja — farm supply
  EN 3, 2070-621 Cartaxo · Mon–Sat 08:30–19:30; public holidays 09:00–18:00 · 9 km · agriloja.pt

• Where to buy seeds and seedlings in Santarém
• Selling your own harvest in Portugal

Places: © OpenStreetMap contributors, ODbL.

Weather in Santarém by month

Average weather in Santarém over 2016–2025: the warmest month is August. Months that average 20 °C or more by day: April–October (20.5–30.9 °C). Months that average 30 °C or more by day: July (30.2 °C) and August (30.9 °C). No month averages below 0 °C at night; the coldest nights, in January, average 6.8 °C. About 641 mm of rain falls in a year, on 84 days; November is the wettest month (87 mm) and August the driest (3 mm).

Average of the daily highs and lows, rain per month and days with at least 1 mm (ERA5 via Open-Meteo, the same grid cell as the frost dates).